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Change logs for security intelligence update version 1.445.6.0

This page lists newly added and updated threat detections included in security intelligence updates for Microsoft Defender Antivirus and other Microsoft antimalware. If you don’t find the latest security intelligence update version in the selector below, please refresh this page or let us know us know through the feedback smiley.

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Released on

2/12/2026 2:37:52 AM

Added threat detections

Name Severity
Backdoor:MSIL/SneakyGrunt.A!dha severe
HackTool:HTML/AutoKMS!MSR high
HackTool:HTML/AutoKMS!MSR high
Trojan:HTML/Redirector.TSC!MTB severe
Trojan:MSIL/AsyncRAT.PMD!MTB severe
Trojan:MSIL/AsyncRAT.PMD!MTB severe
Trojan:Win64/Mikey.SXF!MTB severe
Trojan:Win64/Mikey.SXF!MTB severe
TrojanDropper:O97M/ZooFlip.B!dha severe

Updated threat detections

Name Severity
Adware:Win32/Agent high
Adware:Win32/OpenSUpdater high
Adware:Win32/Tnega high
Backdoor:Linux/Dakkatoni.az!MTB severe
Backdoor:MacOS/Mettle.A!MTB severe
Backdoor:MSIL/Bladabindi!rfn severe
Backdoor:PHP/Webshell severe
Backdoor:PHP/Webshell.PA severe
Backdoor:Win32/Bladabindi!ml severe
BrowserModifier:Win32/MediaArena high
Exploit:HTML/Shellcode.G!MSR severe
Exploit:Win32/Tudimons.A!dha severe
HackTool:BAT/AutoKMS!AMTB high
HackTool:MSIL/Malgent!AMTB high
HackTool:Python/Impacket high
HackTool:Python/Impacket!AMTB high
HackTool:Python/Impacket!MSR high
HackTool:Python/Impacket.AAK high
HackTool:Python/Impacket.V high
HackTool:Win32/Activator!MTB high
HackTool:Win32/AutoKMS!MTB high
HackTool:Win32/crack high
HackTool:Win32/Keygen high
HackTool:Win32/Keygen!AMTB high
HackTool:Win32/Keygen!MTB high
HackTool:Win32/Malgent!MSR high
HackTool:Win32/Patcher high
HackTool:Win32/Patcher!MTB high
HackTool:Win32/PowersploitHijack.A!dll high
HackTool:Win32/Silentall!MTB high
HackTool:Win32/Tnega!MTB high
HackTool:Win32/WNetWatcher!MTB high
HackTool:Win64/CobaltStrike!rfn high
HackTool:Win64/KMSAuto!MTB high
Misleading:Linux/FRP.B!MTB high
Phish:HTML/FakeExpiry.AC!MTB severe
Ransom:MSIL/Cryptolocker.PDN!MTB severe
Ransom:MSIL/EncnCrypt!rfn severe
Ransom:PowerShell/Roduk severe
Ransom:Win32/BlackCat!rfn severe
Ransom:Win32/ContiCrypt!rfn severe
Ransom:Win32/DragonForce!rfn severe
Ransom:Win32/Qilinloader!rfn severe
Ransom:Win32/SafePay.MKV!MTB severe
Ransom:Win64/Inc!rfn severe
Trojan:AndroidOS/AVerseFalc!rfn severe
Trojan:HTML/Phish.SLOJ!MTB severe
Trojan:HTML/Phish.SLZV!MTB severe
Trojan:HTML/Phish.SLZY!MTB severe
Trojan:HTML/Qakbot!rfn severe
Trojan:HTML/Redirector.MK!MTB severe
Trojan:HTML/Redirector.TSC!MTB severe
Trojan:JS/Obfuse.ABF!MTB severe
Trojan:JS/ObfuseLNK.ALY!MTB severe
Trojan:JS/Pterodo!rfn severe
Trojan:JS/QakbotLNK!rfn severe
Trojan:Linux/Multiverze!rfn severe
Trojan:Linux/Samblad.A!MTB severe
Trojan:MacOS/Multiverze!rfn severe
Trojan:MSIL/Disabler.ARA!MTB severe
Trojan:MSIL/Polazert!rfn severe
Trojan:MSIL/RedLineStealer!AMTB severe
Trojan:O97M/Donoff!rfn severe
Trojan:PDF/Bumblebee!rfn severe
Trojan:PDF/Phish!rfn severe
Trojan:PHP/Malgent!MSR severe
Trojan:PowerShell/Malgent severe
Trojan:Script/Malgent!MSR severe
Trojan:VBS/Emotet!rfn severe
Trojan:VBS/Qakbot!rfn severe
Trojan:Win32/Acll!rfn severe
Trojan:Win32/Alevaul!rfn severe
Trojan:Win32/AutoitInject.C!MTB severe
Trojan:Win32/Casdet!rfn severe
Trojan:Win32/Ceevee severe
Trojan:Win32/Conteban.A!rfn severe
Trojan:Win32/CoreWarrior.DA!MTB severe
Trojan:Win32/CryptInject severe
Trojan:Win32/CryptInject!rfn severe
Trojan:Win32/DllInject!rfn severe
Trojan:Win32/Donut!MTB severe
Trojan:Win32/Dynamer!ac severe
Trojan:Win32/Dynamer!dtc severe
Trojan:Win32/Dynamer!rfn severe
Trojan:Win32/Egairtigado!rfn severe
Trojan:Win32/Etset!rfn severe
Trojan:Win32/Fauppod!rfn severe
Trojan:Win32/Kepavll!rfn severe
Trojan:Win32/Leonem severe
Trojan:Win32/Leonem!rfn severe
Trojan:Win32/Malex!rfn severe
Trojan:Win32/Malgent severe
Trojan:Win32/Malgent!MSR severe
Trojan:Win32/Malgent!MTB severe
Trojan:Win32/Malgent!rfn severe
Trojan:Win32/Mamson.A!ac severe
Trojan:Win32/MereTam!rfn severe
Trojan:Win32/Pomal!rfn severe
Trojan:Win32/PrintSpoofer!MTB severe
Trojan:Win32/Qakbot!rfn severe
Trojan:Win32/Seheq!rfn severe
Trojan:Win32/Sehyioa.A!cl severe
Trojan:Win32/ShortSeek!rfn severe
Trojan:Win32/Skeeyah severe
Trojan:Win32/Suschil!rfn severe
Trojan:Win32/SystemBC!rfn severe
Trojan:Win32/Tiggre!rfn severe
Trojan:Win32/Tnega!ml severe
Trojan:Win32/Tnega!MSR severe
Trojan:Win32/Wacatac.A!rfn severe
Trojan:Win32/WinGo!rfn severe
Trojan:Win32/WinLNK!rfn severe
Trojan:Win32/Yomal!rfn severe
Trojan:Win32/Znyonm!rfn severe
Trojan:Win64/BlackWidow!rfn severe
Trojan:Win64/CoinMiner!rfn severe
Trojan:Win64/Emotet!rfn severe
Trojan:Win64/Emotetcrypt!rfn severe
Trojan:Win64/EmotetPacker!rfn severe
Trojan:Win64/Glassworm!MTB severe
Trojan:Win64/Malgent!MSR severe
Trojan:Win64/OysterLoader!rfn severe
Trojan:Win64/PortStart!rfn severe
Trojan:Win64/RomCom!rfn severe
Trojan:Win64/ShellcodeRunner.AHE!MTB severe
Trojan:Win64/ShellcodeRunner.AUS!MTB severe
Trojan:Win64/Tedy!MTB severe
Trojan:Win64/ZooFang.D!dha severe
Trojan:Win64/ZooFang.E!dha severe
Trojan:Win64/Zusy!rfn severe
TrojanDownloader:JS/Qakbot!rfn severe
TrojanDownloader:MSIL/AgentTesla!rfn severe
TrojanDownloader:O97M/Donoff severe
TrojanDownloader:O97M/Emotet!rfn severe
TrojanSpy:Win32/AveMaria!rfn severe
VirTool:Java/Meterpreter.A severe
VirTool:Win32/Sliver!rfn severe
VirTool:Win32/Tabloid!MTB severe